EUVD-2026-83658

A flaw has been found in aiyiyi121 SxDevOps 1.0/1.1. Affected is the function subprocess.Popen of the file backend/aiops/services.py of the component MCP STDIO Server Management. This manipulation of the argument endpointorcommand causes command injection. The attack may be initiated remotely...

mcp-stdio-shellguard

StudioMeyer MCP Stack 的一部分 — 在马略卡岛构建 🌴 · 如果使用请⭐ mcp-stdio-shellguard 针对 MCP stdio 服务器的深度防御捆绑包。使用白名单 + 沙箱 + 重放检测包装 childprocess.exec/spawn，外加一个 AST 审计 CLI mcp-shellguard-audit，用于扫描 MCP 服务器源中未清理的 shell 调用。封堵了 Ox-Security MCP stdio-RCE 漏洞类别（200k 台易受攻击服务器，2026 年 5 月披露）。 MCP spec : 2025-06-18 SDK :...

mcpshield

mcpshield 一个针对未修补的 MCP STDIO 命令注入漏洞（CVE-2026-30623 系列，由 OX Security 于 2026 年 4 月披露，归为“设计问题”——无 SDK 补丁）的即插即用修复方案。只需导入一行代码，你的 Python 应用启动的每个 stdio MCP 服务器，在操作系统生成进程之前，其命令/参数/环境变量都会经过验证。 如果你是新手，请先阅读 适用范围，然后 安装 和 快速入门 将让你在两分钟内获得保护。 目录 项目状态 适用范围 安装 快速入门 选项 A：自动补丁（Python MCP 主机） 选项 B：静态检查（任何语言，零执行） 选项...

CVE-2026-12940-Langflow-Unauth-RCE

CVE-2026-12940 — Langflow OSS ≤ 1.10.1 未认证 RCE（MCP stdio 环境变量注入） 在 Langflow OSS 直至 1.10.1 的版本中存在未认证远程代码执行漏洞。用于保护 MCP stdio 服务器配置的环境变量黑名单（DANGEROUSENVVARS）遗漏了 SHELLOPTS、BASHOPTS 和 PS4。由于 MCP stdio 启动器会通过 bash -c 运行配置的命令，攻击者可以注入 SHELLOPTS=xtrace 以及 PS4 命令替换，并以 Langflow 进程用户的身份执行任意 shell 命令——无需有效的 M...

CVE-2026-42271-PoC

CVE-2026-42271 — LiteLLM MCP stdio 测试端点认证命令注入漏洞 LiteLLM POST /mcp-rest/test/connection 和 POST /mcp-rest/test/tools/list — 通过 MCP stdio 传输实现的需认证命令注入。任何有效的 API 密钥都可以以 root 身份（默认 Docker 部署中）执行任意操作系统命令。 镜像已通过 digest 固定 ：存在漏洞的容器固定为 LiteLLM v1.82.6 ，确保长期可复现。...

CVE-2026-90898

Bifrost registers MCP clients through its management API. A stdio client is a command plus args. Bifrost starts that program in the gateway the moment the client is added. No MCP handshake required. The default is governance.authconfig.isenabled=false. Auth off means every caller is a local admin...

CVE-2026-90898

Bifrost (by maximhq) is vulnerable to unauthenticated remote code execution through its MCP stdio client registration endpoint. When a stdio client is registered via POST /api/mcp/client, Bifrost immediately spawns the specified command in the gateway—no MCP handshake required. By default, authen...

CVE-2026-90898 Bifrost unauthenticated remote code execution via MCP stdio client registration

Bifrost registers MCP clients through its management API. A stdio client is a command plus args. Bifrost starts that program in the gateway the moment the client is added. No MCP handshake required. The default is governance.authconfig.isenabled=false. Auth off means every caller is a local admin...

CVE-2026-78575

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration...

CVE-2026-78575

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration...

CVE-2026-78575

IBM Langflow OSS 1.0.0–1.11.5 is vulnerable to OS command injection (CWE-78) in the MCP stdio server configuration , allowing a remote authenticated attacker to execute arbitrary commands. The root cause involves two gaps: the MCP stdio validator on Windows recognizes only one cmd.exe execution s...

CVE-2026-78575 Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration...

PT-2026-89614

🚨 CVE-2026-78575 IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration. 🎖@cveNotify...

Security Bulletin: Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards

Summary Langflow uses a code security scanner and component-level execution policies to restrict server-side code execution to authorized users and contexts. The agentic assistant code scanner employs an incomplete denylist omitting process-spawning primitives and contains a logic error where...

GHSA-W3FX-MC44-MF6J Chainlit has command injection via MCP stdio transport that allows unauthenticated remote code execution

Am I affected? Only if your deployment sets features.mcp.enabled = true in .chainlit/config.toml. MCP has been disabled by default since v2.7.0, so most Chainlit deployments are not affected. No authentication is required: /mcp is reachable by any client that can open a session. Summary When MCP ...

CVE-2026-45018 Chainlit: Command injection via MCP stdio transport allows unauthenticated remote code execution

Chainlit is a Python framework for building production-ready conversational AI applications. From 2.4.0rc0 until 2.12.0, Chainlit deployments with features.mcp.enabled set to true in .chainlit/config.toml expose the POST /mcp endpoint without requiring authentication. For stdio transport, the...

CVE-2026-45018

Chainlit (Python framework for conversational AI applications) is vulnerable to command injection via its MCP stdio transport in versions 2.4.0rc0 through 2.12.0 . When features.mcp.enabled is set to true, the POST /mcp endpoint is exposed without authentication . The validate_mcp_command() funct...

IBM Langflow OSS command injection vulnerability

IBM Langflow OSS is an open-source low-code visualization AI workflow building tool developed by IBM. It enables developers to quickly build, deploy, and iterate AI agents and RAG applications through drag-and-drop components. Additionally, it supports deep customization using Python to integrate...

CVE-2026-44450 Lumiverse: RCE via MCP stdio argument injection

Lumiverse is a full-featured AI chat application. Prior to 0.9.7, the MCP server creation endpoint validates the command field against an allowlist of binary names but forwards the args array to the child process without any validation. Every binary on the allowlist accepts an inline-code executi...

GHSA-P3M6-JR2H-HHXJ Duplicate Advisory: OpenClaw: MCP stdio server env could load dangerous startup variables from workspace config

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-mj59-h3q9-ghfh. This link is maintained to preserve external references. Original Description OpenClaw before 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server...